# readOnlyRootFilesystem option for psmdb-db on kubernetes managed by operator doesnt works

**URL:** <https://forums.percona.com/t/readonlyrootfilesystem-option-for-psmdb-db-on-kubernetes-managed-by-operator-doesnt-works/38128>\
**Category:** Percona Operator for MongoDB\
**Created:** [May 28, 2025, 9:38am UTC](https://forums.percona.com/t/readonlyrootfilesystem-option-for-psmdb-db-on-kubernetes-managed-by-operator-doesnt-works/38128 "2025-05-28T09:38:14Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![m.benik](https://avatars.discourse-cdn.com/v4/letter/m/3e96dc/32.png) [@m.benik](https://forums.percona.com/u/m.benik)\
**Post date:** [May 28, 2025, 9:38am UTC](https://forums.percona.com/t/readonlyrootfilesystem-option-for-psmdb-db-on-kubernetes-managed-by-operator-doesnt-works/38128/1 "2025-05-28T09:38:14Z")

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## Description:

Operator workload-deployment runs on Kubernetes cluster without problem.  
Afterwards StatefulSet is created for mongodb-cluster to manage 3 pods.  
Pods crash with crashloopbackoff error.

value.yaml under psmdb-db folder looks like this:  
replsets:  
rs0:  
podSecurityContext:  
fsGroup: 9001  
supplementalGroups:  
- 1001  
containerSecurityContext:  
allowPrivilegeEscalation: false  
capabilities:  
drop:  
- ALL  
privileged: false  
readOnlyRootFilesystem: true  
runAsGroup: 9001  
runAsNonRoot: true  
runAsUser: 9001

## Steps to Reproduce:

- cd charts/psmdb-operator

- helm upgrade   
–install mongodb-operator-1   
–debug   
–wait   
–timeout=20m .

- cd charts/psmdb-db

- helm upgrade   
–install mongodb-cluster-1   
–debug   
–set serviceAccount.name=percona-server-mongodb-operator   
–wait   
–timeout=20m .

## Version:

1.20.0

## Logs:

Logs from Pod.  
path":“/tmp/mongodb-27017.sock”,“error”:"Read-only file system

---

<div class="post-metadata">

**Author:** ![Slava\_Sarzhan](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/slava_sarzhan/32/3196_2.png) [@Slava\_Sarzhan](https://forums.percona.com/u/Slava_Sarzhan)\
**Post date:** [May 29, 2025, 2:55pm UTC](https://forums.percona.com/t/readonlyrootfilesystem-option-for-psmdb-db-on-kubernetes-managed-by-operator-doesnt-works/38128/2 "2025-05-29T14:55:24Z")

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@m.benik Hi, we have a task [Jira](https://perconadev.atlassian.net/browse/K8SPSMDB-863) about this problem. We will improve it in 1.22.0.

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<div class="post-metadata">

**Author:** ![amerello](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/amerello/32/21244_2.png) [@amerello](https://forums.percona.com/u/amerello)\
**Post date:** [February 3, 2026, 10:47am UTC](https://forums.percona.com/t/readonlyrootfilesystem-option-for-psmdb-db-on-kubernetes-managed-by-operator-doesnt-works/38128/3 "2026-02-03T10:47:11Z")

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Hi @Slava_Sarzhan , is there an ETA for the release of 1.22.0?  
Many thanks